Pilot-scale Opposite Folded Plate Hybrid Anaerobic Reactor in Treating Low Concentration Sewage

摘要

Based on the theories of mass-transfer and two-double integrated staged multi-phase anaerobe (TSMPA), a pilot-scale opposite folded plate hybrid anaerobic reactor (OFPHAR) was designed to treat low concentration sewage. All the trials lasted 12 months,and the results indicated that the optimal HRT was 6h. At this HRT with temperature 25±2 °C,the COD, TP and TN removal rates were 78.58%, 35.15%, 39.17%, respectively. Furthermore, the optimal anaerobic section rate was 45%～65%, while the optimal influent COD concentration was 150～800mg/L. When the temperature decreased to (7±1)°C and the HRT was given as 6h, the removal rates of COD, TP and TN were 64.37%, 20.72%, 23.65% results of trials showed that the application of the proposed OFPHAR to treat low concentration sewage is feasible at low temperature in North China. According to the results of trials, the efficiency of OFPHAR to dispose low concentration sewage could be owed to high efficient mass-transfer and TSMPA.